Fibres coated with a hydrophobic material

Abstract

The invention relates to fibers coated with a hydrophobic material based on an epoxidized polydiene oligomer. This coating results from the photopolymerization of a composition comprising at least one expoxidized polydiene oligomer, at least one photoinitiator salt and optionally a reactive diluent. The invention relates in particular to optical fibers.

We claim: 
     
       1. Coated fiber comprising a hydrophobic material based on an epoxidized polydiene oligomer, wherein the coating results from the photopolymerization of a composition comprising at least one epoxidized polydiene oligomer, at least one photoinitiator salt and optionally a reactive diluent. 
     
     
       2. Coated fiber according to claim 1, wherein the diene is a conjugated diene. 
     
     
       3. Coated fibers according to claim 2 wherein the epoxidized polydiene oligomer is a hydroxytelechelic polybutadiene epoxidized on the chain. 
     
     
       4. Coated fiber according to claim 1, wherein the fiber is selected from glass, metal and textile fiber. 
     
     
       5. Coated fiber according to claim 2, wherein the conjugated diene is butadiene.